<?php   // $Id: timezone.php,v 1.8.2.1 2008/05/02 04:07:28 dongsheng Exp $

	require_once('../config.php');

	$zone = optional_param('zone', '', PARAM_PATH); //not a path, but it looks like it anyway

	require_login();

	require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));

	$strtimezone = get_string("timezone");
	$strsavechanges = get_string("savechanges");
	$strusers = get_string("users");
	$strall = get_string("all");

	print_header($strtimezone, $strtimezone, build_navigation(array(array('name' => $strtimezone, 'link' => null, 'type' => 'misc'))));

	print_heading("");

	if (!empty($zone) and confirm_sesskey()) {
		$db->debug = true;
		echo "<center>";
		execute_sql("UPDATE {$CFG->prefix}user SET timezone = '$zone'");
		$db->debug = false;
		echo "</center>";

		$USER->timezone = $zone;
	}

	require_once($CFG->dirroot.'/calendar/lib.php');
	$timezones = get_list_of_timezones();

	echo '<center><form action="timezone.php" method="get">';
	echo "$strusers ($strall): ";
	choose_from_menu ($timezones, "zone", 99, get_string("serverlocaltime"), "", "99");
	echo "<input type=\"hidden\" name=\"sesskey\" value=\"$USER->sesskey\" />";
	echo "<input type=\"submit\" value=\"$strsavechanges\" />";
	echo "</form></center>";

	print_footer();

?>
